Degassing block is a solid refining agent used to remove dissolved gases, especially hydrogen, from molten aluminum. By generating inert gas bubbles during the melting process, it helps reduce porosity, pinholes, and internal casting defects, improving the quality and consistency of aluminum castings.
- Removes dissolved hydrogen from molten metal
- Reduces porosity, pinholes, and gas-induced defects
- Improves casting density and mechanical properties
- Suitable for aluminum alloy casting production
Working Principle
The degassing block works through chemical reactions that produce inert gas bubbles, such as nitrogen and carbon dioxide. These bubbles rise through the molten metal and adsorb or carry away dissolved hydrogen during their ascent. At the same time, the reaction process helps purify the molten metal, reduce harmful gas content, and improve the compactness of the final casting.
Process Steps:
- The degassing block is added into the molten aluminum.
- High-temperature reaction generates inert gas bubbles.
- Bubbles adsorb and remove hydrogen during rising.
- Molten metal is purified, and casting quality is improved.
Features & Advantages
- Effective degassing for aluminum alloy melts
- Helps reduce porosity and pinhole defects
- Improves casting density and surface quality
- Stable reaction and convenient use
- Available in different specifications to meet production requirements
- Aerospace castings
- Automotive parts
- High-pressure valve bodies
- Wheels and hubs
- Other aluminum alloy castings with high gas tightness requirements
Accessories & Consumables
We provide a full series of matched spare parts and consumables for our die casting machines, including graphite silicon carbide crucibles, injection rods, injection chambers, ceramic, nickel‑based and ductile iron injection plungers, mold release agent, sprayer nozzles, shot beads and mechanical ladles. Our accessories maintain stable performance and good compatibility to support continuous and efficient die casting production.
FAQ
Q1: Who we are?
Bengbu Longhua Die Casting Machine Co., Ltd is a national high-tech enterprise specializing in the R&D and manufacturing of high-speed and high-precision AI die casting machines and intelligent equipment. Integrating design, R&D, manufacturing and sales, we serve the non-ferrous metal deep processing market in more than 45 countries and regions worldwide.
Q2: What are your main products?
Our main products include cold chamber die casting machines, hot chamber die casting machines, die casting molds, die casting robots, industrial automation and peripheral equipment.
Q3: What happens if insufficient degassing is performed on molten aluminum?
Undergassing leaves hydrogen trapped inside the melt. After solidification, internal pores and pinholes will form, which damages air tightness and reduces the tensile strength of aluminum castings.
Q4: Does the degassing block generate smoke or strong odor during reaction?
Our degassing block features stable and mild chemical reaction. It produces little smoke under normal operating temperature, and will not cause heavy pollution on the casting site.
Q5: What are the main application industries for degassing block?
Widely used for aluminum alloy castings with high air tightness requirements, including automotive wheel hubs, aerospace parts and high-pressure hydraulic components.
